org.apache.commons.collections4.functors

Class TransformerPredicate<T>

java.lang.Object

org.apache.commons.collections4.functors.TransformerPredicate<T>

All Implemented Interfaces:

java.io.Serializable, Predicate<T>

public final class TransformerPredicate<T>
extends java.lang.Object
implements Predicate<T>, java.io.Serializable

Predicate implementation that returns the result of a transformer.

Since:

3.0

Version:

$Id: TransformerPredicate.java 1476582 2013-04-27 14:13:54Z tn $

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private Transformer<? super T,java.lang.Boolean>	iTransformer The transformer to call
private static long	serialVersionUID Serial version UID

Constructor Summary

Constructors

Constructor and Description
TransformerPredicate(Transformer<? super T,java.lang.Boolean> transformer) Constructor that performs no validation.

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(T object) Evaluates the predicate returning the result of the decorated transformer.
Transformer<? super T,java.lang.Boolean>	getTransformer() Gets the transformer.
static <T> Predicate<T>	transformerPredicate(Transformer<? super T,java.lang.Boolean> transformer) Factory to create the predicate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial version UID

See Also:

Constant Field Values

iTransformer

private final Transformer<? super T,java.lang.Boolean> iTransformer

The transformer to call

Constructor Detail

TransformerPredicate

public TransformerPredicate(Transformer<? super T,java.lang.Boolean> transformer)

Constructor that performs no validation. Use transformerPredicate if you want that.

Parameters:

transformer - the transformer to decorate

Method Detail

transformerPredicate

public static <T> Predicate<T> transformerPredicate(Transformer<? super T,java.lang.Boolean> transformer)

Factory to create the predicate.

Type Parameters:

T - the type that the predicate queries

Parameters:

transformer - the transformer to decorate

Returns:

the predicate

Throws:

java.lang.IllegalArgumentException - if the transformer is null

evaluate

public boolean evaluate(T object)

Evaluates the predicate returning the result of the decorated transformer.

Specified by:

evaluate in interface Predicate<T>

Parameters:

object - the input object

Returns:

true if decorated transformer returns Boolean.TRUE

Throws:

FunctorException - if the transformer returns an invalid type

getTransformer

public Transformer<? super T,java.lang.Boolean> getTransformer()

Gets the transformer.

Returns:

the transformer

Since:

3.1